TS317L_08 TSC | Alldatasheet
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% SEMICONDUCTOR TS31 7L s) RoHS 3-Terminal Adjustable Positive Voltage Regulator COMPLIANCE 70-92 Pin Definition: SOP-8 Pin Definition: ; 1. Adjustable ; 4. Input 8.N/C 2. Output 2. Output 7. Output 3. Input 3. Output 6. Output 5 ; 4. Adjustable 5. NIC 123 General Description The TS317L is adjustable 3-terminal positive voltage regulator capable of supplying in excess of 100mA over an output voltage range of 1.25 V to 37 V. This voltage regulator is exceptionally easy to use and require only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow-out proof. Besides replacing fixed regulators, the TS317L is useful in a wide variety of other applications. Since the regulator is “floating “ and sees only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded. Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the TS317L can be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground which programs the output to 1.25V where most loads draw little current. Features Standard Application Circuit © Output Voltage Range 1.25 to 37V e Output current in Excess of 100mA Vin Vout e Eliminates Stocking Many Fixed Voltages Oo TS317L O e Internal Thermal Overload Protection i e Current Limit Constant with Temperature 240 e Output transistor safe-area compensation 5 ladj + ane j Cin No Co @ Output voltage offered in 4% tolerance O.1uF 1.0uF e@ Floating Operation for High Voltage Applications i
Ordering Information
Part No. Packing = TS317LCT BO TO-92 1Kpcs / Bulk Cin is required if regulator is located an appreciable TS317LCT A3_| 0-92 2Kpes / Ammo distance from power supply filter. : - [sors | 7 Co is not needed for stability, however, it does improve TS317LCS RL SOP-8 2.5Kpes / 13” Reel transient response. Vout = 1.25 V(1 + R2/R1 ) + IagR2 Since Ing, is controlled to less than 100 pA, the error associated with this term is negligible in most
applications
411 Version: BO7
br) SEMICONDUCTOR TS31 7L (s) RoHS 3-Terminal Adjustable Positive Voltage Regulator COMPLIANCE Absolute Maximum Rating (Ta = 25°C unless otherwise noted) Parameter Symbol Unit Input Voltage v Power Dissipation [Po | __Internal Limited w Operating Junction Temperature -20~+125 °c Storage Temperature Range -65~+150 °c
Electrical Characteristics
(Vi -Vo = 5.0 V, lo=40mA; Ty =TLow to Tricn see [Note 1]; Pmax per [Note 2]; unless otherwise specified.) Parameter [ Figure | Symbot_| min. | Typ. | Max. | Unit Reference voltage, 3V < Vi-Vo < 40V Line regulation (Note 3) . 9 Ta = 25°C, 3VsVi-Vos40V REGline oo7 | *v : = 959 Load regulation Ta = 25°C, 10mA ¢ Io< Imax (Note 3) 2 REGload 25 mv 0.5 YN Thermal regulation, Ta = 25°C (Note 6),20mS Pulse |_| REGtherm | -- | 0.03 | 0.07 | %VoW Adjustment pin current | 3 | tag | ~ | 50 | 100 | ua Adjustment pin current change, 3V < V, - Vo s 40V 10mA < lo < Imax, Pd < Pmax, 12 o2 | 50 uA Maximum output current Vi - Vo $ 6.25V, Pd s Pmax (TO-92 package) i 1 2 A Vi-Vo $ 40V, Pd < Pmax, Ta = 25°C (TO-92 3 max 90 a m package) Temperature stability (Tow © 71S Tuan) | 3 [| ts [| - [| 1 | ~ | %vo Minimum load current to maintain regulation . RMS Noise, % of Vo,Ta=25°C, 10Hz <fs10KHz | | N | - | 0.003[ - | %Vo Ripple Rejection, Vo =10V, f =120Hz (Note 4) Without Cadj 4 PSRR 65 dB Cadj = 10uF 80 Long-term stability (Note 5), Tj = Trich 9 Ta =25 °C for endpoint measurements,1000hrs 3 s 03 10 % Notes: 1. TLow to Trish = -20°C to +125°C 2. Pmax is internally limited 3. Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used. 4. Cadj, when used, is connected between the adjustment pin and ground. 5. Since Long-Term Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average stability from lot to lot. 6. Power dissipation within an IC voltage regulator produces a temperature gradient on the die, affecting individual IC components on the die. These effects can be minimized by proper integrated circuit design and layout techniques. Thermal Regulation in the effect of these temperature gradients on the output voltage and is expressed in the percentage of output change per watt of power change in a specified time. 2/11 Version: BO7
0 Vadj O2
1 Output
Figure 1. Line Regulation Test Circuit Figure 2. Load Regulation and Figure 3. Standard Test Circuit Figure 4. Ripple Rejection Test Circuit
04 E 020 Ty= 150°C
Figure 5. Load Regulation Figure 6. Current Limit Figure 7. Adjustment Pin Current Figure 8. Dropout Voltage Figure 9. Temperature Stability Figure 10. Minimum Operating Current
% SEMICONDUCTOR TS31 7L e) RoHS 3-Terminal Adjustable Positive Voltage Regulator COMPLIANCE
Application information
The TS317L is a 3-terminal floating regulator. In operation, the TS317L develops and maintains a nominal 1.25V reference (Vref) between its output and adjustment terminals. This reference voltage is converted to a programming current (Iprog.) by Ri (see Figure 17), and this constant current flows through Rz to ground. The regulated output voltage is given by: Vout = Vref (1+R2/R1) + ladj* R2 Since the current from the adjustment terminal (ladj) represents an error term in the equation, the TS317L was designed to control ladj to less than 100uA and keep it constant. To do this, all quiescent operating current is returned to the output terminal. This imposes the requirement for a minimum load current. If the load current is less than this minimum, the output voltage will rise. Since the TS317L is a floating regulator, it is only the voltage differential across the circuit which is important to performance, and operation at high voltages with respect to ground is possible. Vin Vout + oO TS317L oF ; © Vout 4N4002 R Vin Vout Adjust © ‘ \\ i ju: PROG Cin Ry D. T Co — Adjust © I 1N4002 ‘Adj R.
2 Z Ro Cagj
© Vout Viet = 1.25 V Typical Figure 17. Basic Circuit Configuration Figure 18. Voltage Regulator with Protection Diode capacitors from discharging through low current points into the regulator. prevents Cap, from discharging through the I.C. during an input short circuit. be returned near the load ground to provide remote ground sensing and improve load regulation. A0.1yF disc or 1uF tantalum input bypass capacitor (Cin) is recommended to reduce the sensitivity to input line impedance. amplified as the output voltage is rejection about 15dB at 120 Hz in a 10V application. tantalum or 25uF aluminum electrolytic capacitor on the output swamps this effect and insures stability.
95 SEMICONDUCTOR TS31 7L
0.1 WE | bas ee >R Our
Figure 19. “LABORATORY” power supply with adjustable current limit and output voltage
425 Vout Ry Yo» Io Dy
As shown O< lg <95mA Dj protects the device during an input short circuit. Figure 20. Adjustable Current Limiter Figure 21. 5V Electronic Shutdown Regulator
Figure 22. Slow Turn-on Regulator Figure 23. Current Regulator
95 SEMICONDUCTOR TS317L
s) RoHS 3-Terminal Adjustable Positive Voltage Regulator COMPLIANCE TO-92 Mechanical Drawing A “TT j om | —mutmevers [cries] [min | max | min | Max | B Ja | 430 | 470 | 0.169 | 0.165 _| }o | 043 | o49 | 0017 | 0019 | pe | 219 | 281 | 0.086 | 0.111 | Cc E F G ae Marking Diagram Y = = Year Code TSC M = = Month Code 317L (A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep, YML J=Oct, K=Nov, L=Dec) | L = =Lot Code 123 9/11 Version: BO7
s) RoHS 3-Terminal Adjustable Positive Voltage Regulator COMPLIANCE SOP-8 Mechanical Drawing A [om [MILLIMETERS |e Sa naa [MIN | MAX [MIN 7 MAX. | Hon [| A | 480 | 5.00 | 01489 | 0.196 | T | [| B | 380 | 400 | 0150 | 0.157 | BP [| D | 035 | 049 | 0014 | 0.019 | [ F | 040 | 4.25 | 0016 | 0.049 | (O) 7 To [ kK | 040 | 0.25 | 0.004 7 0.009 | [Myo fT 7 fo fT 7 | ee rd [Pp | 880 [620 | 0229 | o2aa_| G [ R_ [ 025 | 050 [| 0010 | 0.019 | te R Cee ae a : K Marking Diagram Y =Year Code M = =Month Code TS317L (A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep, YML ASI) J=Oct, K=Nov, L=Dec) fe) L = =Lot Code 10/11 Version: BO7
% SEMICONDUCTOR TS31 7L s) RoHS 3-Terminal Adjustable Positive Voltage Regulator COMPLIANCE Notice Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. 11/11 Version: BO7